Sources checked October 18, 2026
Fit the mask where you sleep
A mask that fits while sitting may feel different when you lie down. Check the seal in your usual sleep position with the device running.
Try a position check
- Notice whether your pillow pushes the cushion sideways.
- Make sure the tube has enough slack to turn comfortably without pulling on the mask.
- Turn to the other side and check again.
If turning breaks the seal
Describe the problem during a mask-fitting review. A different size or design may suit your sleep position. Ask about compatibility before buying accessories.
Sources & manufacturer resources
General education from Medigy. This guide does not replace your clinician’s advice or the instructions for your device and mask. Ask your clinician before changing prescribed therapy settings.